Your email problem is being caused because you unsubscribed from us in your Gmail account by clicking this:

If I had unsubscribed, is it normal that I still receive all your e-mails ?
The problem is the delay of reception. I receive the confirmation link for withdrawal, sometimes half a day after request.

To follow your instructions, even if I never unsubscribed, I did it then re-subscribed immediately after. I tried another withdrawal request and it failed (no e-mail received).

No problem with my Inbox/Spambox either since I tested it out with other e-mails and they reach within seconds.

I am using your service for years now. This is the first time I am stuck with this kind of issue and I am losing opportunities there.